diff --git a/tests/fuzz/run.py b/tests/fuzz/run.py
index d3fe5ffad4dd..b1130c5bd5a1 100755
--- a/tests/fuzz/run.py
+++ b/tests/fuzz/run.py
@@ -5,7 +5,7 @@
 import re
 import subprocess
 
-from concurrent.futures import ProcessPoolExecutor, as_completed
+from concurrent.futures import ThreadPoolExecutor, as_completed
 
 
 def job(command):
@@ -54,7 +54,7 @@ def job(command):
     target_dir = os.path.abspath(os.path.dirname(__file__))
     targets = [os.path.join(target_dir, f) for f in os.listdir(target_dir)
                if re.compile(r"^fuzz-[\w-]*$").findall(f)]
-    with ProcessPoolExecutor(max_workers=args.par) as pool:
+    with ThreadPoolExecutor(max_workers=args.par) as pool:
         jobs = []
         runs = args.runs if args.generate else 1